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/* 68k-dependent portions of the RPC protocol

   used with a VxWorks target

   Contributed by Wind River Systems.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place - Suite 330,

   Boston, MA 02111-1307, USA.  */

#include <stdio.h>

#include "defs.h"

#include "vx-share/regPacket.h"

#include "frame.h"

#include "inferior.h"

#include "target.h"

#include "gdbcore.h"

#include "command.h"

#include "symtab.h"

#include "symfile.h"            /* for struct complaint */

#include "regcache.h"

#include "gdb_string.h"

#include <errno.h>

#include <fcntl.h>

#include <sys/types.h>

#include <sys/time.h>

#include <sys/socket.h>

#ifdef _AIX                     /* IBM claims "void *malloc()" not char * */

#define malloc bogon_malloc

#endif

#include <rpc/rpc.h>

#ifdef _AIX

#undef malloc

#endif

#include <sys/time.h>           /* UTek's <rpc/rpc.h> doesn't #incl this */

#include <netdb.h>

#include "vx-share/ptrace.h"

#include "vx-share/xdr_ptrace.h"

#include "vx-share/xdr_ld.h"

#include "vx-share/xdr_rdb.h"

#include "vx-share/dbgRpcLib.h"

/* get rid of value.h if possible */

#include <value.h>

#include <symtab.h>

/* Flag set if target has fpu */

extern int target_has_fp;

/* Generic register read/write routines in remote-vx.c.  */

extern void net_read_registers ();

extern void net_write_registers ();

/* Read a register or registers from the VxWorks target.

   REGNO is the register to read, or -1 for all; currently,

   it is ignored.  FIXME look at regno to improve efficiency.  */

void

vx_read_register (int regno)

{

  char mc68k_greg_packet[MC68K_GREG_PLEN];

  char mc68k_fpreg_packet[MC68K_FPREG_PLEN];

  /* Get general-purpose registers.  */

  net_read_registers (mc68k_greg_packet, MC68K_GREG_PLEN, PTRACE_GETREGS);

  bcopy (&mc68k_greg_packet[MC68K_R_D0], registers, 16 * MC68K_GREG_SIZE);

  bcopy (&mc68k_greg_packet[MC68K_R_SR], &registers[REGISTER_BYTE (PS_REGNUM)],

         MC68K_GREG_SIZE);

  bcopy (&mc68k_greg_packet[MC68K_R_PC], &registers[REGISTER_BYTE (PC_REGNUM)],

         MC68K_GREG_SIZE);

  /* Get floating-point registers, if the target system has them.

     Otherwise, zero them.  */

  if (target_has_fp)

    {

      net_read_registers (mc68k_fpreg_packet, MC68K_FPREG_PLEN,

                          PTRACE_GETFPREGS);

      bcopy (&mc68k_fpreg_packet[MC68K_R_FP0],

             &registers[REGISTER_BYTE (FP0_REGNUM)],

             MC68K_FPREG_SIZE * 8);

      bcopy (&mc68k_fpreg_packet[MC68K_R_FPCR],

             &registers[REGISTER_BYTE (FPC_REGNUM)],

             MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8));

    }

  else

    {

      bzero (&registers[REGISTER_BYTE (FP0_REGNUM)],

             MC68K_FPREG_SIZE * 8);

      bzero (&registers[REGISTER_BYTE (FPC_REGNUM)],

             MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8));

    }

  /* Mark the register cache valid.  */

  registers_fetched ();

}

/* Store a register or registers into the VxWorks target.

   REGNO is the register to store, or -1 for all; currently,

   it is ignored.  FIXME look at regno to improve efficiency.  */

void

vx_write_register (int regno)

{

  char mc68k_greg_packet[MC68K_GREG_PLEN];

  char mc68k_fpreg_packet[MC68K_FPREG_PLEN];

  /* Store general-purpose registers.  */

  bcopy (registers, &mc68k_greg_packet[MC68K_R_D0], 16 * MC68K_GREG_SIZE);

  bcopy (&registers[REGISTER_BYTE (PS_REGNUM)],

         &mc68k_greg_packet[MC68K_R_SR], MC68K_GREG_SIZE);

  bcopy (&registers[REGISTER_BYTE (PC_REGNUM)],

         &mc68k_greg_packet[MC68K_R_PC], MC68K_GREG_SIZE);

  net_write_registers (mc68k_greg_packet, MC68K_GREG_PLEN, PTRACE_SETREGS);

  /* Store floating point registers if the target has them.  */

  if (target_has_fp)

    {

      bcopy (&registers[REGISTER_BYTE (FP0_REGNUM)],

             &mc68k_fpreg_packet[MC68K_R_FP0],

             MC68K_FPREG_SIZE * 8);

      bcopy (&registers[REGISTER_BYTE (FPC_REGNUM)],

             &mc68k_fpreg_packet[MC68K_R_FPCR],

             MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8));

      net_write_registers (mc68k_fpreg_packet, MC68K_FPREG_PLEN,

                           PTRACE_SETFPREGS);

    }

}